Humidifying heat exchanger for fuel cell

Abstract

The present invention relates to a humidifying heat exchanger for a fuel cell. The humidifying heat exchanger includes a body comprising a gas inflow hole defined in one end thereof and a gas discharge hole defined in the other end thereof in a longitudinal direction, a first tube disposed within the body, the first tube being spirally wound along the longitudinal direction of the body, a second tube disposed within the body and spirally wound along the longitudinal direction of the body, the second tube being disposed outside the first tube to surround the first tube, a supply unit disposed at a side of the gas discharge hole to supply a mixture of a fuel and water into the first and second tubes, and a discharge unit disposed at a side of the gas inflow hole to discharge the mixture supplied from the first and second tubes.

1 . A humidifying heat exchanger for a fuel cell, comprising:
 a body comprising a gas inflow hole defined in one end thereof and a gas discharge hole defined in the other end thereof in a longitudinal direction;   a first tube disposed within the body, the first tube being spirally wound along the longitudinal direction of the body;   a second tube disposed within the body and spirally wound along the longitudinal direction of the body, the second tube being disposed outside the first tube to surround the first tube;   a supply unit disposed at a side of the gas discharge hole to supply a mixture of a fuel and water into the first and second tubes; and   a discharge unit disposed at a side of the gas inflow hole to discharge the mixture supplied from the first and second tubes.   
     
     
         2 . The humidifying heat exchanger of  claim 1 , wherein the supply unit comprises:
 a fuel supply part through which the fuel is supplied;   a water supply part through which the water is supplied; and   a mixing part in which the fuel supplied from the fuel supply part and the water supplied from the water supply part are mixed, the mixing part being connected to the first and second tubes.   
     
     
         3 . The humidifying heat exchanger of  claim 1 , wherein the discharge unit comprises:
 a collection tube to which the mixture supplied from the first tube and the mixture supplied from the second tube are collected; and   a discharge tube connected to the collection tube to discharge the mixture to the outside.   
     
     
         4 . The humidifying heat exchanger of  claim 3 , wherein the first and second tubes are coupled to the body at a side of the supply unit and to the collection tube at a side of the discharge unit. 
     
     
         5 . The humidifying heat exchanger of  claim 1 , further comprising a flow diffusion unit extending along the longitudinal direction of the body and having a cylindrical shape passing through a center of the first tube. 
     
     
         6 . A humidifying heat exchanger for a fuel cell, comprising:
 a body comprising a gas inflow hole defined in one end thereof and a gas discharge hole defined in the other end thereof in a longitudinal direction;   a first tube disposed in the body, the first tube being spirally wound along the longitudinal direction of the body;   a flow diffusion unit passing through a center of the first tube and extending along the longitudinal direction of the body;   a supply unit disposed at a side of the gas discharge hole to supply a mixture of a fuel and water into the first tube; and   a discharge unit disposed at a side of the gas inflow hole to discharge the mixture from the first tube.   
     
     
         7 . The humidifying heat exchanger of  claim 6 , wherein the flow diffusion unit has an empty cylindrical shape. 
     
     
         8 . The humidifying heat exchanger of  claim 7 , wherein the flow diffusion unit comprises a discharge hole defined in one end at the side of the gas discharge unit to discharge air within the flow diffusion unit. 
     
     
         9 . The humidifying heat exchanger of  claim 6 , further comprising a second tube disposed within the body and spirally wound along the longitudinal direction of the body, the second tube being disposed outside the first tube to surround the first tube,
 wherein the supply unit supplies the mixture into the first and second tubes, and the discharge unit discharges the mixture from the first and second tubes.   
     
     
         10 . The humidifying heat exchanger of  claim 9 , wherein the second tube is wound in a direction opposite to the first tube. 
     
     
         11 . The humidifying heat exchanger of  claim 9 , wherein the supply unit comprises:
 a fuel supply part through which the fuel is supplied;   a water supply part through which the water is supplied; and   a mixing part in which the fuel supplied from the fuel supply part and the water supplied from the water supply part are mixed, the mixing part being connected to the first and second tubes.   
     
     
         12 . The humidifying heat exchanger of  claim 9 , wherein the discharge unit comprises a collection tube to which the mixture supplied from the first tube and the mixture supplied from the second tube are collected and a discharge tube connected to the collection tube to discharge the mixture to the outside of the body.